<template>
	<view>
	 <view class="search-box">
	 	<uni-search-bar @confirm="search" @input="input" cancelButton="none" radius="18"></uni-search-bar>
	 </view>
	 <view class="suggest-list" v-if="searchResults.length !== 0">
	   <view class="suggest-item" v-for="(item, i) in searchResults" :key="i" @click="gotoDetail(item)">
	     <view class="goods-name">{{ item.goods_name }}</view>
	     <uni-icons type="arrowright" size="16"></uni-icons>
	   </view>
	 </view> 
   <view class="history-box" v-else>
     <view class="history-title">
       <text>搜索历史</text>
       <uni-icons type="trash" size="17" @click="clean"></uni-icons>
     </view>
     <view class="history-list">
       <uni-tag :text="item" v-for="(item, i) in historys" :key="i" @click="gotoGoodsList(item)"></uni-tag>
     </view>
   </view>
	</view>
</template>

<script>
	export default {
		data() {
			return {
				timer: null,
        keyword: '',
        searchResults: [],
        historyList: []
			};
		},
    onLoad() {
      this.historyList = JSON.parse(uni.getStorageSync('keyword') || '[]')
    },
    methods: {
      input(e) {
        // console.log(e)
        clearTimeout(this.timer)
        this.timer = setTimeout(() => {
          this.keyword = e.value
          this.getSearchList()
        }, 500)
      },
      async getSearchList() {
        if (this.keyword === '') {
          this.searchResults = []
          return
        }
        const {data: res} = await uni.$http.get('/api/public/v1/goods/qsearch', { query: this.keyword })
        if (res.meta.status !== 200) return uni.$showMsg()
        this.searchResults = res.message
        this.saveSearchHistory()
      },
      gotoDetail(item) {
        console.log(item.goods_id)
        uni.navigateTo({
          url: '/subpkg/goods_detail/goods_detail?goods_id=' + item.goods_id,
        })
      },
      saveSearchHistory() {
        // this.historyList.push(this.keyword)
        const set = new Set(this.historyList)
        set.delete(this.keyword)
        set.add(this.keyword)
        this.historyList = Array.from(set)
        uni.setStorageSync('keyword', JSON.stringify(this.historyList))
      },
      clean() {
        this.historyList = []
        uni.setStorageSync('keyword', '[]')
      },
      gotoGoodsList(kword) {
        uni.navigateTo({
          url: '../goods_list/goods_list?query=' + kword
        })
      }
    },
    computed: {
      historys() {
        return [...this.historyList].reverse()
      }
    }
	}
  
</script>

<style lang="scss">
.search-box {
  position: sticky;
  top: 0;
  z-index: 999;
}
.suggest-list {
  padding: 0 5px;
  .suggest-item {
    font-size: 12px;
    padding: 13px 0;
    border-bottom: 1px solid #efefef;
    display: flex;
    justify-content: space-between;
    align-items: center;
    .goods-name {
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      margin-right: 3px;
    }
  }
}
.history-box {
  .history-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 40px;
    font-size: 13px;
    padding: 0 5px;
    border-bottom: 1px solid #efefef;
  }
  .history-list {
    display: flex;
    flex-wrap: wrap;
    .uni-tag {
      margin: 5px 5px 0 0;
    }
  }
}
</style>
